ASA S1 4 PART 2-2014 American National Standard Electroacoustics C Sound Level Meters C Part 2 Pattern Evaluation Tests (a nationally adopted international standard).pdf

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1、 ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2013 AMERICAN NATIONAL STANDARD Electroacoustics Sound Level Meters Part 2: Pattern Evaluation Tests (a nationally adopted international standard) Accredited Standards Committee S1, Acoustics Standards Secretariat Acoustical Society of America 1305 Walt Whitm

2、an Road, Suite 300 Melville, NY 11747 ANSI/ASA S1.4-2014/Part 2 /IEC 61672-2:2013The American National Standards Institute, Inc. (ANSI) is the national coordinator of voluntary standards development and the clearinghouse in the U.S.A. for information on national and international standards. The Acou

3、stical Society of America (ASA) is an organization of scientists and engineers formed in 1929 to increase and diffuse the knowledge of acoustics and to promote its practical applications. ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2013 Electroacoustics Sound Level Meters Part 2: Pattern Evaluation Test

4、s (a nationally adopted international standard) Secretariat: Acoustical Society of America Approved on July 21, 2014 by: American National Standards Institute, Inc. Abstract ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2013 provides details of the tests necessary to verify conformance to all mandatory sp

5、ecifications given in ANSI/ASA S1.4-2014/Part 1 / IEC 61672-1:2013 for time-weighting sound level meters, integrating-averaging sound level meters, and integrating sound level meters. Pattern-evaluation tests apply for each channel of a multi-channel sound level meter, as necessary. Tests and test m

6、ethods are applicable to class 1 and class 2 sound level meters. The aim is to ensure that all laboratories use consistent methods to perform pattern-evaluation tests. This edition constitutes a technical revision; the main technical changes with regard to the previous edition concern conformance to

7、 specifications which is now demonstrated when measured deviations from design goals do not exceed the applicable acceptance limits, and when the uncertainty of measurement does not exceed the corresponding maximum permitted uncertainty, with both uncertainties determined for a coverage probability

8、of 95 %. In this document, references to IEC 61672-1, IEC 61672-2, and IEC 61672-3 refer to the second editions of the IEC standards unless stated otherwise. They refer equally to the ANSI/ASA S1.4-2014 / IEC 61672:2013 editions. Procedures for the pattern-evaluation testing of sound level meters de

9、signed to conform to the specifications of IEC 61672-1:2002 were given in IEC 61672-2:2003. 2014 Acoustical Society of America All rights reserved ii9.15 Overload indication 32 9.16 C-weighted peak sound level . 33 9.17 Reset 34 9.18 Electrical output . 34 9.19 Timing facilities 34 9.20 Crosstalk in

10、 multi-channel sound level meter systems 34 9.21 Power supply . 34 10 Pattern evaluation report . 35 2014 Acoustical Society of America All rights reserved iiiForeword This Foreword is for information only, and is not a part of the American National Standard ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2

11、013 American National Standard Electroacoustics Sound Level Meters Part 2: Pattern Evaluation Tests. As such, this Foreword may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the standar

12、d. This standard comprises a part of a group of definitions, standards, and specifications for use in acoustics. It was developed and approved by Accredited Standards Committee S1 Acoustics, under its approved operating procedures. Those procedures have been accredited by the American National Stand

13、ards Institute (ANSI). The Scope of Accredited Standards Committee S1 is as follows: Standards, specifications, methods of measurement and test, and terminology in the field of physical acoustics, including architectural acoustics, electroacoustics, sonics and ultrasonics, and underwater sound, but

14、excluding those aspects which pertain to biological safety, tolerances, and comfort. This standard is identical to IEC 61672-2:2013, which was prepared by IEC Technical Committee 29, in cooperation with the International Organization of Legal Metrology (OIML). However, in conformance with ANSI and I

15、EC rules, the words “this part of ANSI/ASA S1.4 / IEC 61672” replace the words “this part of IEC 61672” where they appear in the IEC document, decimal points were substituted in place of the decimal commas used in IEC documents, and American English spelling is used in place of British English spell

16、ing. The ANSI/ASA equivalents for the ISO standards in the IEC 61672 series and other referenced nationally adopted standards are given below: ANSI/ASA S1.4-2014/Part 1 / IEC 61672-1:2013 is an identical national adoption of IEC 61672-1:2013. ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2013 is an identi

17、cal national adoption of IEC 61672-2:2013. ANSI/ASA S1.4-2014/Part 3 / IEC 61672-3:2013 is an identical national adoption of IEC 61672-3:2013. This nationally adopted international standard is one of three standards that, taken together, revise and replace ANSI/ASA S1.4-1983 (R2006), ANSI S1.4A-1985

18、 (R2006) and ANSI S1.43-1997 (R2007). The subject matter in this document (Part 2) was not part of the superseded American National Standards. U.S. NOTE: The following introductory text describes the differences between the current version of IEC 61672-2 and the 2003 version; it does NOT present the

19、 differences between this version and the previous version of ANSI S1.4-1983, ANSI S1.4A-1985, or ANSI S1.43-1997. This second edition cancels and replaces the first edition published in 2003. This second edition constitutes a technical revision. The main technical changes with regard to the previou

20、s edition are as follows: In this second edition, conformance to specifications is demonstrated when: a) measured deviations from design goals do not exceed the applicable acceptance limits, and b) the uncertainty of measurement does not exceed the corresponding maximum permitted uncertainty, with b

21、oth uncertainties determined for a coverage probability of 95 %. 2014 Acoustical Society of America All rights reserved iv At the time this Standard was submitted to Accredited Standards Committee S1, Acoustics for approval, the membership was as follows: R.J. Peppin, Chair A. Scharine, Vice-Chair S

22、.B. Blaeser, Secretary 3M Personal Safety Division, Detection Solutions . P.J. Battenberg M. Wurm (Alt.) Acoustical Society of America . R.J. Peppin Air-Conditioning, Heating and Refrigeration Institute S.J. Lind D. Abbate (Alt.) American Industrial Hygiene Association D. Driscoll D. Sandfort (Alt.)

23、 Campanella Associates A.J. Campanella Casella USA R. Brauch ETS-Lindgren Acoustic Systems D. Winker M. Black (Alt.) G.R.A.S. Sound FAX: 631-923-2875; E-mail: asastdsacousticalsociety.org. AMERICAN NATIONAL STANDARD ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2013 2014 Acoustical Society of America All

24、rights reserved 1American National Standard Electroacoustics Sound Level Meters Part 2: Pattern Evaluation Tests 1 Scope This part of ANSI/ASA S1.4/IEC 61672 provides details of the tests necessary to verify conformance to all mandatory specifications given in IEC 61672-1 for time-weighting sound le

25、vel meters, integrating-averaging sound level meters, and integrating sound level meters. Pattern-evaluation tests apply for each channel of a multi-channel sound level meter, as necessary. Tests and test methods are applicable to class 1 and class 2 sound level meters. The aim is to ensure that all

26、 laboratories use consistent methods to perform pattern-evaluation tests. NOTE 1 In this document, references to IEC 61672-1, IEC 61672-2, and IEC 61672-3 refer to the second editions unless stated otherwise. U.S. INFORMATIVE NOTE: In this document, references to IEC 61672-1, IEC 61672-2, and IEC 61

27、672-3 refer to the three parts of ANSI/ASA S1.4-2014 / IEC 61672:2013. See the list provided in the Foreword. NOTE 2 Procedures for the pattern-evaluation testing of sound level meters designed to conform to the specifications of IEC 61672-1:2002 were given in IEC 61672-2:2003. 2 Normative reference

28、s The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 6

29、0942, Electroacoustics Sound calibrators IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques Electrostatic discharge immunity test IEC 61000-4-3:2010, Electromagnetic compatibility (EMC) Part 4-3: Testing and measurement techniques Radiated, radio-fre

30、quency, electromagnetic-field immunity test IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) Part 4-6: Testing and measurement techniques Immunity to conducted disturbances, induced by radio-frequency fields IEC 61000-6-2:2005, Electromagnetic compatibility (EMC) Part 6-2: Generic standards I

31、mmunity for industrial environments IEC 61094-1, Measurement microphones Part 1: Specifications for laboratory standard microphones IEC 61094-5, Measurement microphones Part 5: Methods for pressure calibration of working standard microphones by comparison ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2013

32、 2014 Acoustical Society of America All rights reserved 2 IEC 61183, Electroacoustics Random-incidence and diffuse-field calibration of sound level meters IEC 61672-1, Electroacoustics Sound level meters Part 1: Specifications IEC 62585, Electroacoustics Methods to determine corrections to obtain th

33、e free-field response of a sound level meter CISPR 16-1-1, Specification for radio disturbance and immunity measuring apparatus and methods Part 1-1: Radio disturbance and immunity measuring apparatus Measuring apparatus 1CISPR 16-1-2:2006, Specification for radio disturbance and immunity measuring

34、apparatus and methods Part 1-2: Radio disturbance and immunity measuring apparatus Ancillary equipment Conducted disturbances CISPR 16-2-1:2010 (Ed. 2.1), Specification for radio disturbance and immunity measuring apparatus and methods Part 2-1: Methods of measurement of disturbances and immunity Co

35、nducted disturbance measurements CISPR 16-2-3:2010 (Ed. 3.1), Specification for radio disturbance and immunity measuring apparatus and methods Part 2-3: Methods of measurement of disturbances and immunity Radiated disturbance measurements CISPR 22:2008, Information technology equipment Radio disturb

36、ance characteristics Limits and methods of measurement ISO/IEC Guide 98-3, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) ISO/IEC Guide 99, International vocabulary of metrology Basic and general concepts and associated terms (VIM) ISO 26101:2012,

37、 Acoustics Test methods for the qualification of free-field environments 3 Terms and definitions For the purposes of this document, in addition to the terms and definitions given in IEC 61672-1 and IEC 62585, the terms and definitions given in IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-6, ISO/IEC Gui

38、de 98-3, and ISO/IEC Guide 99 also apply. 4 Submission for testing 4.1 At least three specimens of the same pattern of sound level meter shall be submitted for pattern-evaluation testing. As a minimum, the laboratory shall select two of the specimens for testing. At least one of the two specimens sh

39、all then be tested fully according to the procedures of this Standard. The laboratory shall decide whether the full tests shall also be performed on the second specimen or whether additional limited testing is adequate to approve the pattern. 1In English, CISPR stands for International Special Commi

40、ttee on Radio Interference. ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2013 2014 Acoustical Society of America All rights reserved 34.2 An Instruction Manual and all items or accessories that are identified in the Instruction Manual as integral components for the normal mode of operation shall be submi

41、tted along with the three sound level meters. Examples of additional items or accessories include a microphone extension device or cable and peripheral equipment. 4.3 If the manufacturer of the sound level meter supplies devices that are to be connected to the sound level meter by cables, then the d

42、evices and cables shall be submitted with the sound level meter. 4.4 A calibrated sound calibrator of a model specified in the Instruction Manual for the sound level meter shall be supplied with the sound level meter. An Instruction Manual for the sound calibrator shall also be provided. As required

43、 by IEC 61672-1, the model of the calibrator shall conform to the relevant specifications of IEC 60942 for the class of sound calibrator. 5 Marking of the sound level meter and information in the Instruction Manual 5.1 It shall be verified that the sound level meter is marked according to the requir

44、ements of IEC 61672-1. 5.2 It shall be verified that the Instruction Manual contains all the information that is required by IEC 61672-1, as relevant to the facilities provided by the sound level meter. 5.3 If the sound level meter does not conform to the requirements of 5.1 and 5.2, no pattern-eval

45、uation tests shall be performed. 5.4 After completion of all tests, the information shall be reviewed to ensure that it is correct and that no applicable acceptance limits are exceeded. 6 Mandatory facilities and general requirements 6.1 No test specified in this part of ANSI/ASA S1.4 / IEC 61672 sh

46、all be omitted unless the sound level meter does not possess the facility described for the test. When the design of a sound level meter which has been pattern approved is changed and a new pattern approval is requested, then, at the discretion of the laboratory, it is not necessary to repeat those

47、tests for electroacoustical performance characteristics that are not affected by the design change. 6.2 A time-weighting sound level meter shall be verified to be able to display A-frequency-weighted, F-time-weighted sound level and to be able to indicate overload and under-range conditions. 6.3 An

48、integrating-averaging sound level meter shall be verified to be able to display A-frequency-weighted, time-averaged sound level and to be able to indicate overload and under-range conditions. 6.4 An integrating sound level meter shall be verified to be able to display A-frequency-weighted sound expo

49、sure level and to be able to indicate overload and under-range conditions. 6.5 All display devices for the sound level meter shall be verified to be able to display sound levels or sound exposure levels with the resolution required by IEC 61672-1. The range of the display shall be at least the minimum specified in IEC 61672-1. ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2013 2014 Acoustical Society of America All rights reserved 4 6.6 If a sound level meter is capable of measuring maxi